Drift anchor



FIG. 1 is a front elevational view of a drift anchor;

FIG. 2 is a right side elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a back view; and,

FIG. 7 is a side view. 

CLAIM The ornamental design for a drift anchor, as shown and described. 